Excavation for the piers of the railway line running north-west of Vesuvius, led to the discovery of a stretch of a canal-aqueduct, with seven piers, forming part of the Roman Serino aqueduct. The construction phases until its ruin and subsequent abandonment were identified. The aqueduct was flanked by two beaten earth roads. The terminus ante quem for its dating was represented, in the 5th century A.D., by the so-called Pollena eruption of Vesuvius, the accumulation of eruptive material covering the collapsed pilasters of its arches. Close by, the channel of the aqueduct (in correspondence with pier 39 of the railway line) was underground (to a height of 1.93 m and a width of 0.70 m), with opus caementicium walls built abutting the terrain, and a vaulted covering, probably visible in antiquity, also in opus caementicium.